excrement vs puke

excrement and puke both are nouns.

Word	Noun	Adjective	Verb	Adverb
excrement	Yes	No	No	No
puke	Yes	No	Yes	No

As nouns, puke is a hyponym of excrement; that is, puke is a word with a more specific, narrower meaning than excrement:

excrement: waste matter (as urine or sweat but especially feces) discharged from the body
puke: the matter ejected in vomiting

excrement (noun)	puke (noun)
waste matter (as urine or sweat but especially feces) discharged from the body	a person who is deemed to be despicable or contemptible
	the matter ejected in vomiting

excrement (verb)	puke (verb)
	eject the contents of the stomach through the mouth